Home / 771,986,074.80-1,157,979,112.20-690,356,737.20

Finding the Fourth Proportional to 771,986,074.80, 1,157,979,112.20 and 690,356,737.20

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Solution

The fourth proportional to 771,986,074.80, 1,157,979,112.20 and 690,356,737.20 is: 1,035,535,105.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,986,074.80 : 1,157,979,112.20 = 690,356,737.20 : x
  2. Step 2: Convert to fraction form
    771,986,074.80/1,157,979,112.20 = 690,356,737.20/x
  3. Step 3: Cross multiply
    771,986,074.80x = 1,157,979,112.20 × 690,356,737.20
  4. Step 4: Simplify right side
    771,986,074.80x = 799,418,681,644,144,768
  5. Step 5: Solve for x
    x = 799,418,681,644,144,768/771,986,074.80
  6. Step 6: Final answer
    x = 1,035,535,105.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.